Tom ,clean up the broken glass ---someone walks on it A.since B.w_英语解答

Tom ,clean up the broken glass ---someone walks on it A.since B.when C.before D.as

人气：256 ℃　时间：2019-12-08 17:27:51

解答

C.before
Tom,在有人走上去之前,把碎玻璃清理掉.
clean up：清理